US 12,590,664 B2 · Coating material supply device

Abstract

The disclosure relates to a coating agent supply device for supplying coating agent (e.g. paint) to an applicator (e.g. rotary atomizer). The coating agent supply device according to the disclosure has a pig source station, a pig destination station and a pig line which connects the pig source station to the pig destination station. The pig line contains a pig package with two pigs for clamping the coating agent between the two pigs of the pig package for coating agent transport between the pig source station and the pig destination station. Furthermore, the coating agent supply device has a lubricant supply line for supplying a lubricant for friction-reducing lubrication of the pigs in the pig line when moving the pig package between the pig destination station and the pig source station. In addition, the coating agent supply device according to the disclosure has a controllable lubricant valve, which connects the lubricant supply line to the pig line in order to feed the lubricant into the pig line at a lubricant feed point. The disclosure provides that the lubricant feed point is located in the pig line between the pig source station and the pig destination station.

Claims20

Dependent claims

A coating agent supply device for supplying coating agent to an applicator, with

a) a pig source station,
b) a pig destination station,
c) a pig line, the pig line connecting the pig source station with the pig destination station,
d) a pig package with two pigs arranged in the pig line for clamping the coating agent between the two pigs of the pig package for coating agent transport between the pig source station and the pig-destination station,
e) a lubricant supply line for supplying a lubricant for friction-reducing lubrication of the pigs in the pig line when moving the pig package between the pig destination station and the pig source station, and
f) a controllable lubricant valve, which connects the lubricant supply line to the pig line in order to introduce the lubricant into the pig line at a lubricant feed point,
g) wherein the lubricant feed point is located in the pig line between the pig source station and the pig destination station.

4 more elements

A method for a coating agent supply device, comprising:

a) filling the line section of the pig line in the pig package between the two pigs with the coating agent, the filling taking place in the pig source station,
b) moving the pig package with the coating agent clamped between the two pigs in the pig line from the pig source station to the pig destination station by introducing compressed air into the pig line at the pig source station upstream in front of the pig package,
c) removal of the coating agent clamped between the two pigs of the pig package in the pig line, the coating agent being removed at the pig destination station,
d) supplying the applicator with the coating agent taken from the pig package and applying the coating agent, with excess coating agent remaining in the pig package,
e) returning the pig package with the excess coating agent clamped between the two pigs from the pig destination station to the pig source station by introducing compressed air into the pig line at the pig destination station downstream behind the pig package,
f) removal of the excess coating agent clamped between the two pigs at the pig source station, and
g) returning the excess coating agent removed from the pig package at the pig source station to the coating agent return,
h) introducing the lubricant into the pig line at the lubricant feed point in order to reduce the friction of the pigs in the pig line when returning the pig package from the pig destination station to the pig source station,
i) wherein the lubricant feed point is between the pig source station and the pig package.

6 more elements

Dependencies are inferred from the claim text.

Coating material supply device

Life of this patent

Coating material supply device

Life of this patent

Abstract

Claims20